Vacuum cleaning apparatus.



G. W. MAOKENZIE- VACUUM CLEANING APPARATUS.

APPLIOATIOH FILED AUG. 13, 1910.

Patented Aug. 1, 1911.

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UNITE STATS VACUUM CLEANING APPARATUS.

Application filed August 13, 1910. Serial No. 577,109

To all whom t may concern: 7

Be it known that I, GEORGE W'. MACKEN- ZIE, a citizen of the United States, residing at No. 8 Monitor street, Ben Avon, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Vacuum Cleaning Apparatus, of which the following is a specification.

My invention consists of an improvement in vacuum cleaning apparatus and 'is designed for the purpose of utilizing water pressure to produce exhausting suction by means of an improved aspirating pump and the connected piping equipment therefor, constructed and adapted to operate in the manner hereinafter described.

In the drawings: Figure 1 represents the mechanism as installed for use in a house. Fig. 2 is an enlarged vertical sectional view through the vacuum siphon. Fig. 3 is a horizontal sectional view on the line TIL-III of Fig. 2.

Ordinarily in vacuum cleaning installations and apparatus of various constructions in common use, the dust, etc, is removed from the surface being cleaned by suction and is delivered into a receiving compartment which must be emptied from time to time. My invention contemplates the use of any elastic fluid pressure from any available source as an ordinary water supply system ofsuflicient pressure whereby to produce a suction current through a stand pipe and my improved aspirating pump, the waste fluid together with the collected dirt, finally passing to the sewer or other suitable point of discharge.

In the drawings, 2 represents the aspirating pump having a water supply pipe 3 introduced at its upper end, a suction stand pipe 4 extending up through one or more of the floors of a building as shown and connected with the lateral elbow 5 of the aspirating pump, and an outlet or waste connection 6 leading to the sewer. The stand pipe 4 as stated, extends upwardly through the floors of a building to any desired height and is provided ateach floor with a tee connection 7, to the terminal of which the end of an ordinary hose 8 may be attached pro- Specification of Letters Patent.

Patented Aug. 1, 1911.

vided with the cleaning tool or suction nozzle 9 of any suitable construction. The hose 8 and its cleaning tool are well known elements and may be of any desired design or length as to hose, to suit the use intended. At its upper terminal, the stand pipe 4 preferably extends into a box 10,having a cover 11 located in the topmost floor, the cover being removable to permit of the attachment of the hose 8 as indicated.

. The water supply pipe 3 is connected with the main 12 directly or by any intervening connections, whereby to conduct the water under pressure to the injection nozzle of the pump 2. Pipe 3 is provided with a control ling valve 13 and a key 1 1 therefor having an elongated stem 15 extending upwardly through the floors as shown, and having a handle 16,by which the valve may be opened or closed from any floor.

The pump 2, shown in detail in Figs. 2 and 3, consists preferably of a single integral cylindrical casing provided at its inlet end with the injection nozzle 17 referred to. Said nozzle extends inwardly into the interior chamber 18 at the inlet end of the pump, being preferably screwed into the end of the casing as shown, having a very small jet opening 19 extending therethrough, and connected with pipe 3 by any suitable coupling mechanism. The stand pipe connection 5 may be in the form of an elbow as shown, of an interior area approximating the area of the.cross sectional opening of the main upper portion of the pump and leads into the interior 20 thereof at the lower portion as shown. Between the chamber 20 and the chamber 18 at the upper end, the cross area of the chamber is materially reduced by means of a restricting inner annular projection 21, providing a reduced opening for the jet '22 passing from the nozzle 17. In practice I have secured good results by a pump having an interior cross area of two inches in diameter, restricted to of an inch at the point 21, and located about half way between the end of the injection nozzle 17 and the point of connection of the lateral elbow 5. 23 is a valve controlling inflow of air from the outside to chamber 18 through a small port 24, and

whereby the air supply may be accurately controlled or entirely cut oil. The stpply of air therethrough is within the control of the operator and is dependent on local or other conditions, as-the head of fluid, its pressure, the use to which the device is being put, or other conditions which may arise inobserved that the opening into waste pipe 6 is consi era-bly restrictedas indicated at 25,

ded as shown, whereby to facili- 'e of the water and induced air and im'pui' ities toward and into these'wer connection. i n,

For the purpose of giving-access td'the outlet end of the device for :removal of any foreign substance, as matches, etc., which may lodge across the outlet 25, I have pro-;

vided a lateral opening 26 covered by a screw cap 27, rendered fluid-tight in any suitable way.

It will be understood that when attachment is made with any one of the connec tions 7 or with the top of the stand pipe 4:, all of the other connections are closed so as to i'tilize the full. effect of the pump.

In operation, the outflow of the jet of expending water from nozzle 17 through chamber 18 and the reduced opening formed by the annular st icture 21 and into chamber 20 toward thesewer connection, creates a strong suction through the branch connection-5 and stand pipe 4, of ample power to draw through the terminal 9 and hose 8 all loose impurities, dust, etc., from any surface to which the cleaning tool is applied These pass, with the air, directly into contact with the expanding jet 22 and are carried thereby into the waste, the operation being continued as long as the current is supplied. The form of the jet emitted from nozzle 17, and its volume, may be controlled by the size of the opening 19 and the pressureadmitted-through valve 13, and also, to an extent, by the controlling valve 23 when fused. The, restriction 21 lies at a distance beyond the nozzle 17, leaving just suflicient opening for the passage of the expanding jet as shown, and effects the exiaustion of the air of chamber 18 as soon as thejet is started, thereby tending to produce a partial or practically complete vacuum therein. 'The result of this is to facil tate the expansion of the jet 22 whereby it isemitted beyond restriction 21 in a con-' tinuously diverging volume of increasing rarity." By admitting a limited amount of r of the chamber at such pointair through port 24, retardation of jet 22 is prevented, and its speed and expansion toward restricted opening-21 and chamber 20 is thereby facilitated. The operation of the diverging jet is to produce a constant and increasing tendency toward a vacuum in the center of the jet, a resulting inflow of air from all sides, and a corresponding stronger flow of air from the exterior through stand pipe 4 and connection 5.-

In practice, the invention is capable of producing ample suction for all ordinary purposes. In fact, with the pump of suflicient size and with correspondingly enlarged pipe connections and a suction nozzle "nade in proportion, the invention may be readily adapted for street cleaning purposes, whereby all refuse, dirt, rubbish, etc., which is capable of being gathered through the suction nozzle 9 may be discharged directly into the sewer, whereby to avoid the-necessity of any sweeping, hauling, etc. I The invention is eminently practicable, capable of long continued use without deterioration, greatly simplifies the disposition. of the collected dirt, etc., and is economical to install and equip.

What I claim is 1. An aspirating pump consisting of a c'ylindrical hollow chamber provided with an annular restriction, a fluid inlet jet at, one end of said chamber having a reduced aperture, a waste connection at the other end of the chamber beyond the said restriction, and a lateral air suction connection between the waste connection and said restriction, sub-.

aperture, an air port opening to the interior, ,of the chamber between the annular restriction and the fluid inlet jet, waste connection at the other end of the chamber be-v yond the said restriction, and a lateral air suction connection between the waste connection and said restriction, substantially as setforth,

3. An aspirating pump consisting of a cylindrical hollow chamber pro icled with an annular restriction, a fluid inlet :jet at one end of said chamber having a reduced aperture, a valve-controlled air port opening to the interior of" the chamber between the annular restriction and the fluid inlet jet, a waste connection at the other end of the chamber beyond. the said restriction, and a lateral air suction connection between the waste connection and said restr 1ction,sub-

stantially as set forth.

4. An aspirating pump consisting of a cylindrical hollow chamber provided with an annrlar restriction, a fluid inlet jet at one end of said chamber having a reduced eee ese g,

aperture, a Waste connection at the other In testimony whereof I hereunto affix my end of the chambgr beyond The we resignature in the presence of two Witnesses.

strie'tion a covere o enin eadin into x r;

the chaniber near its $782138 co nnectiom end a GEGRGE MAGKENUIE' v5 lateral air suction connection between the Witnesses:

'Waste connection and said restriction, sub- J. S. KAUFFMAN,

stantially. aesetforth. E. C. CoNKLE. 

